1. doc.: IEEE 802.11-10/0092r0 Submission January 2010 Bruce Kraemer, MarvellSlide 1 +1 (321) 427-4098 5488 Marvell Lane, Santa Clara, CA, 95054 Name Company Address Phone email Bruce Kraemer Marvell bkraemer@marvell.com Energy STAR ad hoc Meeting Information - January 2010 Date: 2010-1-17 Authors: Abstract: Information on Energy STAR of interest to WG11 – January 2010

2. doc.: IEEE 802.11-10/0092r0 Submission January 2010 Bruce Kraemer, MarvellSlide 2 Agenda High Level Questions US Energy STAR Overview What has previously transpired? Test plan Impact on WG11?

3. doc.: IEEE 802.11-10/0092r0 Submission January 2010 Bruce Kraemer, MarvellSlide 3 Questions to the Group What is EPA trying to do? Is the EPA draft test procedure written correctly? Should 802.11 recommend changes to the test? Are there any identifiable additions or changes that should be considered to make 802.11 achieve better Energy STAR scores?

4. doc.: IEEE 802.11-10/0092r0 Submission January 2010 Bruce Kraemer, MarvellSlide 4 Information sources EPA Energy STAR http://www.energystar.gov/ EPA is currently developing a new product specification for Small Network Equipment. Manufacturers, Service Providers, and other interested parties who would like to participate in this process are encouraged to send their contact information to Networking@energystar.gov to be added to the mailing list.Networking@energystar.gov

5. doc.: IEEE 802.11-10/0092r0 Submission January 2010 Bruce Kraemer, MarvellSlide 5 Introduction The US EPA ENERGY STAR program is increasingly focused on products described as miscellaneous energy users – products that are responsible for an ever-growing slice of the home electricity budget. Small Network Equipment (SNE) like modems and routers present an opportunity for reducing national household energy use due to the large installed base of products and their always-on status. Nearly 20 million SNE devices were shipped in 20081 as demand for broadband services continues to drive sales. Related products currently covered by the ENERGY STAR program are set-top boxes, digital to analog converter boxes, computers, and a wide range of office equipment; in addition, numerous SNE devices are presently recognized by the ENERGY STAR program indirectly through use of ENERGY STAR external power supplies (EPS). EPA intends to investigate energy saving opportunities across the full spectrum of network equipment, so an effort to develop a specification for Large Network Equipment will be considered separately in the coming year.

6. doc.: IEEE 802.11-10/0092r0 Submission January 2010 Bruce Kraemer, MarvellSlide 6 Question to Group EPA Test procedure - Draft 1 Acceptable as written Requires modification –Propose modification 802.11 + amendments Acceptable as is Requires modification –Propose modification

7. doc.: IEEE 802.11-10/0092r0 Submission January 2010 Bruce Kraemer, MarvellSlide 7 Draft Test - Note This draft test procedure is intended for stakeholder review of EPA’s initial proposal for testing small network equipment. It will be the basis for a December 10th stakeholder online meeting. EPA’s primary goals for this document are to generate feedback on the structure of the test procedure, proposed revisions, and areas for clarification. EPA will review feedback from the stakeholder online meeting and incorporate feedback as necessary into a second draft of this document. EPA will provide an additional period of time during December and January for stakeholders to review and comment on the second draft. Early questions, comments, and feedback should be forwarded to networking@energystar.gov.

8. doc.: IEEE 802.11-10/0092r0 Submission January 2010 Bruce Kraemer, MarvellSlide 8 Draft Test - Note Establish a set of definitions to explicitly describe which products are intended to be covered by the specification and to clearly differentiate Small Network Equipment products from other ENERGY STAR product categories. Definitions are used to describe classes and sub-classes of products, operational modes, key components, etc. Note that a product may not be qualified as ENERGY STAR under more than one specification – manufacturers must select the product category that best describes the product they wish to qualify.

9. doc.: IEEE 802.11-10/0092r0 Submission January 2010 Bruce Kraemer, MarvellSlide 9 SNE Definition Network Equipment: A device whose primary function is to pass Internet Protocol traffic among various network interfaces / ports. i. Small Network Equipment (SNE): Network Equipment that is neither rack-mounted nor intended for use in standard equipment racks. SNE covered by this specification is limited to devices meeting the following criteria: 1. Designed for stationary operation; 2. Contains no more than nine wired network ports; 3. Meets the definition of one or more of the Product Types defined below.

10. doc.: IEEE 802.11-10/0092r0 Submission January 2010 Bruce Kraemer, MarvellSlide 10 SNE Product Types i. Wired Router: A network device that determines the optimal path along which network traffic should be forwarded. Routers forward packets from one network to another based on network layer information. Wired Routers with Wi-Fi capability as a primary function are either Access Points or Integrated Home Access Devices. ii. Wired Switch: A network device that filters, forwards, and floods frames based on the destination address of each frame. The switch operates at the data link layer of the OSI model. Wired Switches with Wi-Fi capability as a primary function are either Access Points or Integrated Home Access Devices. iii. Access Point: A device that provides IEEE 802.11 (Wi-Fi) connectivity. iv. Broadband Modem: A device that transmits and receives digitally-modulated analog signals over a wired network. v. End Point Device: A device that functions as either an originator or destination for network traffic passed through Network Equipment. Examples of end point devices include computers, servers, set-top boxes, IP-capable televisions, etc. An end point device is not network equipment. vi. Integrated Home Access Device (IHAD): A network device that includes the capability of a Broadband Modem, a Wired Router, and/or Wireless Router. IHADs may be referred to as Gateways. vii. Wi-Fi Extender: A network device that functions to increase the coverage area of a Wi-Fi network by linking to other Wi-Fi devices using only the wireless link. These devices may alternately be classified as Wi-Fi Repeaters. viii. Optical Network Termination Device (ONT): A device that converts signals between copper (wired) or wireless connections and an optical fiber connection. ONTs are available in either desktop

11. doc.: IEEE 802.11-10/0092r0 Submission January 2010 Bruce Kraemer, MarvellSlide 11 Priority Preliminary Approach: EPA is considering a tiered approach for the SNE specification. The tiered requirements system has been used in other ENERGY STAR programs for home and office electronics products. Under this tiered approach, a first set of requirements (Tier 1) is developed to address products that are established on the market, have measurable energy savings, and may be subject to industry standards or test procedures that can be leveraged by the ENERGY STAR program. At this time, EPA is considering the following types of SNE for inclusion in Tier 1: Wired Router Wired Switch Access Point Broadband Modem (DSL and Cable) ONT Device IHAD (DSL and Cable)

12. doc.: IEEE 802.11-10/0092r0 Submission January 2010 Bruce Kraemer, MarvellSlide 12 Test Configuration 5.3. Wireless UUT Configuration 1. Wireless network conditions: i. Random SSID; ii. 128-bit WPA2 encrypted network; iii. 5 GHz band for IEEE 802.11n networks; iv. 2.4 GHz band for IEEE 802.11g networks; v. An appropriate channel for the network (support OFDM over DSSS over FHSS if 158 configurable); and vi. Interference robustness or other interference mitigation technology turned on.

13. doc.: IEEE 802.11-10/0092r0 Submission January 2010 Bruce Kraemer, MarvellSlide 13 Draft Test Procedure d) Devices with Wireless Connectivity 1. Ensure only one LAN port is connected to the UUT. Ensure the Ethernet port is connected at its highest supported link rate. If the device specifies an uplink port, the device specified port must be used; otherwise the first port must be used. The WLAN must be configured for the highest supported link rate. Record the supported rate for the network port, the wireless link and the version of 802.11 being used for this test. Measure the power consumption as per 6.2 above. 2. Run data at 0.1 Mb/s (0.05 Mb/s in each direction) between the LAN port and the WLAN client. Measure the power consumption as per 6.2 above. 3. Run data at 1.0 Mb/s (0.5 Mb/s in each direction) between the LAN port and the WLAN client. Measure the power consumption as per 6.2 above. 4. Run data at 10 Mb/s (5 Mb/s in each direction) between the LAN port and the WLAN client. Measure the power consumption as per 6.2 above. 5. Run data at 100 Mb/s (50 Mb/s in each direction) between the LAN port and the WLAN client. Measure the power consumption as per 6.2 above. 6. Repeat section d) for each supported version of 802.11x at the highest supported link rate for that version.

14. doc.: IEEE 802.11-10/0092r0 Submission January 2010 Bruce Kraemer, MarvellSlide 14 Draft Test Procedure - Note Note: EPA is considering the following conditions for a wireless test client serving the UUT. Using a single wireless client connected over fixed attenuation cable(s) is an attempt for a simple, consistent test environment. EPA is interested in industry comment on standard testing practices for wireless APs as well as suggestions on the best way to test AP energy use. Wireless testing shall be done with a single WLAN Test Client. 1. Cable connected; 2. Set attenuation set to 70dB ± 1dB; 3. Set the client to forward traffic from and to the traffic generator (see 4.5 below); 4. For devices supporting multiple antennas, connect a cable between each antenna port and a corresponding port on the WLAN client; 5. For devices supporting multiple hardwired antennas, connect a cable between each test port and a corresponding port on the WLAN client.

15. doc.: IEEE 802.11-10/0092r0 Submission January 2010 Bruce Kraemer, MarvellSlide 15 Initial Conclusions No immediate need to amend 802.11 to comply Product implementations could show significant differences Test procedure needs modification/clarification: Test procedure calls for data rate settings that are not actually part of MCS sets e.g. Run data at 0.1 Mb/s (0.05 Mb/s in each direction) between the LAN port and or Is this supposed to be the served data rate?

16. doc.: IEEE 802.11-10/0092r0 Submission January 2010 Bruce Kraemer, MarvellSlide 16 Input to EPA should be routed through WG18?

17. doc.: IEEE 802.11-10/0092r0 Submission January 2010 Bruce Kraemer, MarvellSlide 17 Plans for March? Is anything further required in WG11? Topics to be addressed: 1. Any re-issue of the test procedure 2. 3. 4.